Torque Converter Lockup Clutch Supply Pressure - Test and Adjust
Show/hide table
所需工具     | 数量     |
6V-3079 压力软管组件     | 1     |
6V-4143 连接器组件     | 2     |
8T-0856 压力表 ( 6000 kPa (870 psi))     |
1     |
注: 在您进行任何压力测试之前,确保滤清器和滤网清洁。 在您进行本测试之前,确保油处于工作温度。
Show/hide table
机器突然移动,会造成人员伤亡。 机器突然移动或释放气压或油压,可能对机器上或机器附近的人员造成伤害。 在测试和调整任何空气系统或液压系统之前,为防止可能的伤害,执行测试和调整, "概述"部分的程序。 |
如果存在,本测试会显示是否存在下列情况:
- 变矩器锁定离合器调制阀接收到的供油流量正确
- 动力传动系齿轮泵工作正常
步骤
Show/hide table
图 1 | g02421556 |
770G 上的变速箱左侧视图 (1) 变矩器闭锁离合器调节阀 (2) 变矩器锁定离合器调节阀测压口 |
Show/hide table
图 2 | g02421557 |
772G 上的变矩器后视图 (1) 变矩器闭锁离合器调节阀 (2) 变矩器锁定离合器调节阀测压口 |
- 拆下测压孔 (A) 上的螺塞。 在拆下螺塞的位置安装螺纹接头。
- 利用连接器和软管将 8T-0856 压力表 (6000 kPa (870 psi)) 连接到螺纹接头上。
- 在停车制动器接合的同时起动发动机。 让变速箱处于空档,使发动机在 1700 rpm 下运行。 压力表上的压力必须为 2068 ± 69 kPa (300 ± 10 psi)。
- 当本测试完成后,关闭发动机,卸下测试设备。
油压过低
可能的原因
- 动力传动系泵的充油段出现故障。
- 变矩器锁定离合器调制阀设定值过低。
- 变矩器锁定离合器和电磁阀的供油管路堵塞。
油压过高
可能的原因
变矩器锁定离合器调制阀设定值过高。
Caterpillar Information System:
2011/03/22 Improved Backhoe Loader E2 Boom Stick Pin Retaining Boss {0669, 6501, 6502}
AS4252C Asphalt Screed Principles and Techniques
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Slack Adjuster
2011/03/02 White Color Teflon Insulation is Now Used in (24V) Coil Wire Leads {1554, 3174, 445L, 4804, 4805, 5479, 7556}
2011/02/17 Replacing the Lock Assembly on Certain Generator Sets {7274}
770G and 772G OEM Off-Highway Truck Power Train Hydraulic System Troubleshooting
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Valve (Front Service Brake)
770G and 772G Off-Highway Truck Systems Transfer Gear End Play - Adjust
320E and 323E Excavators Machine Electronic Control System Service Tools
M315C Wheeled Hydraulic Excavator Machine System Pump Coupling
M316D, M318D, M320D2, M322D, M322D 2 MH, M322D2 and M324D 2 MH Wheeled Excavators Machine System Specifications Blade Lift Cylinder
C4.4 Industrial Engine Radiator - Clean
Installation of Cat® Detect Object Detection for 854G, 854K, 992G, 992K, and 993K {1408, 7347, 7348} Installation of Cat® Detect Object Detection for 854G, 854K, 992G, 992K, and 993K {1408, 7347, 7348}
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Oil Cooler (Rear)
770G and 772G Off-Highway Truck Power Train Worksheet
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Valve (Rear Service Brake, Retarder Control, Traction Control)
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Limit Switch (Truck Body Up)
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Hoist System Troubleshooting
770G and 772G Off-Highway Truck (OEM) Hydraulic and Braking System Brake Oil Overheating Troubleshooting
770G and 772G Off-Highway Truck Systems Service Brake Discs - Check
770G and 772G Off-Highway Truck Systems Service Brakes and Retarder System Pressure - Test
770G and 772G Off-Highway Truck Systems Secondary Brake System Pressure Test
770G and 772G Off-Highway Truck Systems Slack Adjuster - Test and Adjust
770G and 772G Off-Highway Truck Systems Gear Pump (Brake, Brake Cooling, Hoist) - Purge